Si33-105 Outline of Control (Outdoor Unit) < Symbols using in this manual >
Function R407C PLUS Series Heat Recovery System 59
"
4
When LP retry is conducted at 200pls in operation, maintain 200pls during standby.
Conduct the next startup at 1200pls for 3 minutes (The control is not switched to SH control
even when
"
1 condition is met.)
When further LP retry is conducted, maintains 1200pls during standby to conduct the next
startup at 2000pls for 3 minutes. (The control is not switched to SH control even when
"
1
condition is met.)
"
5
Outdoor fan control
Regarding 24 to 34HP model, the fan (M12F) on the inverter box side stops if operating at fan
tap or lower. Therefore, Tfin switches M12F to M11F.
Start the control from Step 0.
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6
Outdoor EV control
In cooling operation, fix the EV=0pls on the master unit side and EV=2000pls on the slave unit
side.
16HP to 20HP : EV1=0pls, EV2=2000pls
24HP or larger : EV1, Ev2=0pls, EV3=2000pls
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7
Indoor EV control
Conducts 200pls instruction to all indoor units EV from 10 seconds before SVP=ON.
Note: Refer “Fan Tap Table” Page 96 for fan step detail.
Step Step Step 0
Pc>1.18MPa
Pc<0.98MPa Pc<0.59MPa
Pc>0.78MPa
(V2566)
M11F = H / L / OFF
M12F = OFF
0
M11F = OFF
M12F = ON
Tfin>87˚C
Tfin<67˚C
(V2567)
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